Talk with your son or daughter and get an idea of what they expect. You may need to point out that “more” isn’t always “merrier”! Some of the best parties we’ve seen are small in number, that is, less than 10 guests. As the saying goes “their age plus one” is how many invitations should go out! But, if it is going to be the whole class, you may want to organise some extra party activities in addition to the ponies.